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corsair-commander-core-guide.md

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Corsair Commander Core, Core XT and ST

Driver API and source code available in liquidctl.driver.commander_core.

Changed in 1.11.0: the Corsair Commander Core XT is now supported.
Changed in 1.12.0: the Corsair Commander ST is now supported.

Currently, functionality implemented is listed here. More is planned to be added.

Initializing the device

The device should be initialized every time it is powered on.

# liquidctl initialize
Corsair Commander Core
├── Firmware version            2.6.201
├── AIO LED count                    29
├── RGB port 1 LED count              8
├── RGB port 2 LED count              8
├── RGB port 3 LED count            N/A
├── RGB port 4 LED count            N/A
├── RGB port 5 LED count            N/A
├── RGB port 6 LED count            N/A
├── AIO port connected              Yes
├── Fan port 1 connected            Yes
├── Fan port 2 connected            Yes
├── Fan port 3 connected             No
├── Fan port 4 connected             No
├── Fan port 5 connected             No
├── Fan port 6 connected             No
├── Water temperature sensor        Yes
└── Temperature sensor 1             No

Retrieving the pump speed, fan speeds, and temperatures

The Commander Core and ST currently can retrieve the pump speed, fan speeds, temperature of the water, and the temperature measured by the probe.

# liquidctl status
Corsair Commander Core
├── Pump speed           2356  rpm
├── Fan speed 1           810  rpm
├── Fan speed 2           791  rpm
├── Fan speed 3             0  rpm
├── Fan speed 4             0  rpm
├── Fan speed 5             0  rpm
├── Fan speed 6             0  rpm
└── Water temperature    35.8  °C

The Core XT variant of the device is not meant for use with an AIO, so parameters relating to the pump are not present.

Corsair Commander Core XT
├── Fan speed 1    2737  rpm
├── Fan speed 2    2786  rpm
├── Fan speed 3       0  rpm
├── Fan speed 4       0  rpm
├── Fan speed 5       0  rpm
└── Fan speed 6       0  rpm

Programming the pump and fan speeds

Speed curve profiles

New in git.

The pump or fans speeds can be configured using a speed curve profile with a minimum of 2 or up to 7 curve points.

Each curve point consists of both a temperature (in celsius) and a duty (percentage).

liquidctl set fans speed 28 0  35 50  40 75  41 85  42 90  43 95  44 100
              |          |  |
           channel       |  duty
                      temp

Fixed duty cycle

New in 1.9.0.

The pump or fan speeds can be set to a fixed duty cycle.

# liquidctl set fan1 speed 70
                ^^^^       ^^
               channel    duty

In iCUE the pump can be set to different modes that correspond to a fixed percent that can be used in liquidctl. Quiet is 75%, Balanced is 85% and Extreme is 100%.

Device channels

Valid channel values on the Core (non-XT) and ST are pump, fanN, where 1 <= N <= 6 is the fan number. On the Core XT, the pump channel is not present. The fans channel can be used to simultaneously configure all fans.

Notes

  • A channel may only be configured with a single fixed duty cycle or a single fan curve profile (independently from the other channel configurations).
  • The pump and some fans have a limit to how slow they can go and will not stop when set to zero. This is a hardware limitation that cannot be changed.
  • The cooler's lights flash with every update. Due to limitations in both the device hardware and liquidctl, there currently is no way to solve this problem. For more information, see: #448.